She was selected to become a fashion model for a florist television advertisement at age seven.
She voiced the lead character Susan Murphy, aka Ginormica, in the 2009 animated feature Monsters vs. Aliens.
She married Ryan Phillippe in June of 1999, and the couple welcomed a daughter named Ava in September of 1999 followed by a son named Deacon in 2003. She divorced Phillippe in 2007 and married Jim Toth in 2011. She and Toth have a son named Tennessee. In March 2023, the couple announced their divorce.